Fixed by going to TBS/Config/DefaultGameUserSettings and changing values to such:
bUseVSync=True
ResolutionSizeX=1920
ResolutionSizeY=1080
LastUserConfirmedResolutionSizeX=1920
LastUserConfirmedResolutionSizeY=1080
WindowPosX=-1
WindowPosY=-1
bUseDesktopResolutionForFullscreen=True
FullscreenMode=1
LastConfirmedFullscreenMode=0
Version=5